Mobile

Re: Sending a BN_CLICKED message

13-Dec-04 2:41

Hi, I need to send a button click message to a dialog window button from a thread. I use "PostMessage(BN_CLICKED, IDC_GPS,m_hWnd) " but I think the lparam and wparam are incorrect. I don't find an example or something else.

Can anybody help me?

Thank you.
Regards.

Regards,
Javier

illidan9913-Dec-04 4:33

Re: Sending a BN_CLICKED message

13-Dec-04 4:33

I try to use use PostMessage(WM_COMMAND, MAKEWPARAM(IDC_GPS, BN_CLICKED), <button
> handle>).

Then I try to use "HWND GetDlgItem( int nID )" to get the button handle, but the
compiler makes a error: I can use Cwnd::GetDlgItem ( ) , but not
CWindow::GetDlgItem , which returns the button handle.

How can I use the Window classe?
Thanks.

Regards,
Javier

João Paulo Figueira13-Dec-04 21:59

João Paulo Figueira

13-Dec-04 21:59

The BN_CLICKED message is a notification sent to the button's parent window. If you want to simulate a button press, send the BM_CLICK message to the button.

Regards,
João Paulo Figueira
Embedded MVP

Re: Sending a BN_CLICKED message

illidan9914-Dec-04 3:19

The difference between Win CE and Windows Mobile 2003

14-Dec-04 3:19

Hi, João .

ok, I use:

HWND Hbutton = GetDlgItem(ptrDlg->m_hWnd,IDOK);<br />
SendMessage (Hbutton,BM_CLICK,0,0);

from my thread and it works.

Another question: if I want to send it from the same dialog window (for example from other button), How can I get the handle to the button? Well, I test the following:

SendDlgItemMessage(IDC_GPS,BM_CLICK, 0, 0 );

from the same dialog and it works.

Thanks

Regards,
Javier

eli1502197911-Dec-04 21:11

Re: The difference between Win CE and Windows Mobile 2003

11-Dec-04 21:11

Hi,
What is the difference between Win CE 4.2 and Windows Mobile 2003?
Does Embedded visual c++ 4 support development for Windows Mobile 2003 as it does for WinCE 4.2?

Regards,
Eli

eli1502197911-Dec-04 21:20

Re: The difference between Win CE and Windows Mobile 2003

11-Dec-04 21:20

O.K
I realized that Windows Mobile 2003 is actually Windows CE .NET 4.2.
There is a good article :
http://www.oreillynet.com/pub/a/wireless/2003/07/23/mobile_2003.html

Lvca22-Dec-04 23:15

Lvca

22-Dec-04 23:15

..good.. sorry the link was wrong, here's the correct one:
www.opennetcf.org/Forums/topic.asp?TOPIC_ID=317

ReleaseDC doesn't release memory

~k10-Dec-04 0:43

10-Dec-04 0:43

I had problems using GetDC and ReleaseDC, so I built a blank MFC app like this:

BOOL CTestdcDlg::OnInitDialog()<br />
{<br />
CDialog::OnInitDialog();<br />
<br />
// Set the icon for this dialog. The framework does this automatically<br />
// when the application's main window is not a dialog<br />
SetIcon(m_hIcon, TRUE); // Set big icon<br />
SetIcon(m_hIcon, FALSE); // Set small icon<br />
<br />
CenterWindow(GetDesktopWindow()); // center to the hpc screen<br />
<br />
// TODO: Add extra initialization here<br />
SetTimer(1,200,NULL); <br />
return TRUE; // return TRUE unless you set the focus to a control<br />
}<br />
<br />
<br />
<br />
void CTestdcDlg::OnTimer(UINT nIDEvent) <br />
{<br />
// TODO: Add your message handler code here and/or call default<br />
CDC *myDC;<br />
switch(nIDEvent)<br />
{<br />
case 1:<br />
myDC=GetDC();<br />
ReleaseDC(myDC);<br />
break;<br />
}<br />
CDialog::OnTimer(nIDEvent);<br />
}

The memory used by this application increases continuously.
What am I missing?
This issue is causing me a lot of problems, do you ever encountered a problem like this?

Thanks,

Keraam

Re: ReleaseDC doesn't release memory

eli1502197914-Dec-04 21:22

Re: ReleaseDC doesn't release memory

14-Dec-04 21:22

Hi,
I don't really see the problem,but try to change the timer interval(i don't think that GetDC() and ReleaseDC() takes more than 200msec,but maybe it's the problem).

Good luck
Eli

~k14-Dec-04 22:05

14-Dec-04 22:05

I already tryied but it doesn't change. Thank you anyway.
I fixed the problem using handles instead of pointers for the dc, but I really don't understand why it happens.

Pointer to severals Dialogs

illidan999-Dec-04 1:25

Re: Pointer to severals Dialogs

9-Dec-04 1:25

Hi, I need to have a pointer to a dialog window from a thread. I made a global pointer variable to a dialog window and it works. But Is it possible to do a pointer which can pointer to several dialogs (one at the same time)?

I need to pointer to the active dialog from the thread(the active dialog window it's not the same all the time). I try "void* pointer" but doesn't work, (there'is a error in the reference to the pointer inside the thread).

Regards.

Regards,
Javier

João Paulo Figueira9-Dec-04 6:46

João Paulo Figueira

9-Dec-04 6:46

You must access the pointer value inside a critical section. Otherwise you risk having data corruption.

Regards,
João Paulo Figueira
Embedded MVP

CE remote display / VNC?

Slow30008-Dec-04 6:22

Slow3000

8-Dec-04 6:22

Hi everybody,

I am developing a collaboration application on a Win CE .NET 4.2 based device and Windows 2k/XP based devices and I am trying to remote control the CE device (e.g. like it is possible on desktops with VNC). Basically, this is possible, since it can be done with the Active Sync remote display application. However I'd like to create my own remote control and integrate it into my appliaction, hence my question is: Is it possible to use the interface the AS remote display uses? Does anybody know if this protocol/API is documented somewhere?

Thank you very much Smile | :)

How to convert BD_ADDR to BT_ADDR?

eli150219798-Dec-04 1:23

8-Dec-04 1:23

Hi,
In order to create a virtual COM port(for BlueTooth Comunication),
I need the address of the BlueTooth device.
I know the BD_ADDR,but i must convert it to BT_ADDR if i want to use
the RegisterDevice() function.

anyone?

Regards,
Eli

illidan999-Dec-04 1:17

9-Dec-04 1:17

First, you must know the bluetooth stack that your device has. RegisterDevice() is only supported by Microsoft Bluetooth stack. For example IPAQs uses Windcomm Stack and "RegisterDevice()" doesn't work. So if it's not microsoft Stack, you must buy the correct bluetooth Stack SDK for development.

I made a virtual serial port without "RegisterDevice()" in my IPAQ. Simply uses the normal Open port, close port , read port and write port like it'was a normal serial port. I use the COM8 in my IPAQ hx4700 and it's works. When I open the port, appears a Window Dialog (made by the own Operative System) for choose the bluetooh device to connect. If you want to do this in your own app you must use a bluetooth Stack SDK for development in your device.

Regards.

Regards,
Javier

eli150219799-Dec-04 1:33

9-Dec-04 1:33

Hi Javier,
First,I really appriciate your detailed answer.
just today i saw that iPaq uses the widcom stack and not the MS stack(is that the reason i can't use WSALookupServiceBrgin() etc.)?
anyway,are you using COM8 for both incoming and outgoing massages(i use also the ipaq h2210 and it use COM5 for input and COM8 for output)

Best regards,and thanx,again
Eli

illidan999-Dec-04 1:54

9-Dec-04 1:54

If you have a IPAQ (uses windcom stack) then you cannot use RegisterDevice. About " WSALookupServiceBrgin()" I dont know, surely not, but you can ask in the microsoft Pocket PC 's developer: http://msdn.microsoft.com/newsgroups/default.aspx?dg=microsoft.public.pocketpc.developer[^]

Yes, I use the COM8 for read and write. I saw the Bluetooth config and I saw COM5 for input too, but using COM8 both works. Simply try a sample serial com code (easy to find it, in this web there is something), using COM8 and it must work. If not, try another COM.

Regards.

Regards,
Javier

eli1502197926-Dec-04 2:50

26-Dec-04 2:50

Hi Javier,
I tried to open COM8,but when i open this port,and choose the remote device,
it automaticly create ActiveSync SerialPort connection(instead of generic serial connection).
Here is my code:
//============================================================================
bool PDA_BlueTooth::OutputPortOpening()
{
DWORD dwError;
DCB PortDCB;
COMMTIMEOUTS CommTimeouts;

// Open the serial port.
hOUTPUT = CreateFile(TEXT("COM8:"),GENERIC_READ |
GENERIC_WRITE,0,NULL,CREATE_ALWAYS,0,NULL);
// if it fails to open the port, return FALSE.
if ( hOUTPUT == INVALID_HANDLE_VALUE )
{
// Could not open the port.
AfxMessageBox (TEXT("Unable to open BlueTooth Output Port!!!"));
dwError = GetLastError ();
return false;
}
::SetupComm(hOUTPUT,4000, 2048);
PortDCB.DCBlength = sizeof (DCB);

// Get the default port setting information.
GetCommState (hOUTPUT, &PortDCB);

// Change the DCB structure settings.
PortDCB.BaudRate = 115200; // Current CANgine Baudrate
PortDCB.fBinary = TRUE; // Binary mode; no EOF check
PortDCB.fParity = FALSE; // Disable parity checking
PortDCB.fOutxCtsFlow = FALSE; // No CTS output flow control
PortDCB.fOutxDsrFlow = FALSE; // No DSR output flow control
PortDCB.fDtrControl = DTR_CONTROL_ENABLE;
// DTR flow control type
PortDCB.fDsrSensitivity = FALSE; // DSR sensitivity
PortDCB.fTXContinueOnXoff = TRUE; // XOFF continues Tx
PortDCB.fOutX = FALSE; // No XON/XOFF out flow control
PortDCB.fInX = FALSE; // No XON/XOFF in flow control
PortDCB.fErrorChar = FALSE; // Disable error replacement
PortDCB.fNull = FALSE; // Disable null stripping
PortDCB.fRtsControl = RTS_CONTROL_ENABLE;
// RTS flow control
PortDCB.fAbortOnError = FALSE; // Do not abort reads/writes on
// error
PortDCB.ByteSize = 8; // Number of bits/byte, 4-8
PortDCB.Parity = NOPARITY; // 0-4=no,odd,even,mark,space
PortDCB.StopBits = ONESTOPBIT; // 0,1,2 = 1, 1.5, 2

// Configure the port according to the specifications of the DCB
// structure.
if (!SetCommState (hOUTPUT, &PortDCB))
{
// Could not create the read thread.
AfxMessageBox (TEXT("Unable to configure BlueTooth Output Port"));
dwError = GetLastError ();
return false;
}

// Retrieve the time-out parameters for all read and write operations
// on the port.
GetCommTimeouts (hOUTPUT, &CommTimeouts);

// Change the COMMTIMEOUTS structure settings.
CommTimeouts.ReadIntervalTimeout = MAXDWORD;
CommTimeouts.ReadTotalTimeoutMultiplier = 0;
CommTimeouts.ReadTotalTimeoutConstant = 0;
CommTimeouts.WriteTotalTimeoutMultiplier = 10;
CommTimeouts.WriteTotalTimeoutConstant = 1000;

// Set the time-out parameters for all read and write operations
// on the port.
if (!SetCommTimeouts (hOUTPUT, &CommTimeouts))
{
AfxMessageBox(TEXT("Unable to set the time-out parameters\n for
BlueTooth Output Port"));
dwError = GetLastError ();
return false;
}
AfxMessageBox(TEXT("Output Port is open"));
return true;
}
//============================================================================
Can you give me a sample of your code,plz?????
it is driving me crazy.....

Best Regards,
Eli